Achievement Quotes - Page 40
Fay Weldon (2011). “Letters to Alice”, p.78, Hachette UK
1969 On space flight, in The Guardian.
To be able to concentrate for a considerable time is essential to difficult achievement.
Bertrand Russell (2014). “On Education”, p.160, Routledge
Anna Garlin Spencer (1908). “Woman's Share in Social Culture”